Car-brake



(No Model.) 2 Sheets-Sheet 1.

- H. H. KELLEY.

CAR BRAKE.

atented Nov. 22, 1892.

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THE NORRIS PETERS 60.. PHOTO-L THO WASHINGTQN D C (No Model.) 2Sheets-Sheet 2; H. H. KELLEY. GAR BRAKE Patented Nov. 22, 1892.

UNITED STATES PATENT OFFICE.

HARRY H. KELLEY, OF- WILLOUGHBY, OHIO.

CAR-BRAKE.

SPECIFICATION forming part of Letters Patent No. 486,718, dated November22, 1892. Application filed August 20, 1892. Serial No. 443,591. tNomodel.)

To all whom it may concern.-

Be it known that I, HARRY H. KELLEY, of Willoughby, in the county ofLake and State of Ohio, have invented certain new and usefulImprovements in Car-Brakes; and I do hereby declare the following to bea full, clear, and exact description of the invention, such as willenable others skilled in the art to which it pertains to make and usethe same.

My invention relates to improvements in car-brakes, and more especiallyto the mechanism for applying or setting the brakes of street-cars, theobject being to provide simple and comparatively-inexpensive mechanism,whereby the brakes are more easily and quickly applied without jarringor tearing of the parts, and whereby the purchase is increased in theapplication of the brakes.

With this object in view and with a view of realizing certain otheradvantages hereinafter indicated my invention consists in certainfeatures of construction and in combination of parts hereinafterdescribed, and pointed outin the claims.

In the accompanying drawings, Figure 1 is a side elevation of themachine in com pletep'osition attached to the platform of a street-carthat is shown in dotted lines. Fig. 2 is a top plan of casing C. Fig. 3isaside elevation, partly in section, of said casing and internalmechanism, the section being taken on a line centrally through thebrake-chain spool. Fig. 4 is a top plan of the internal gear integralwith the brake-chain spool and the working pinion, the brake-shaft uponwhich said pinion is mounted being shown in section. Fig. 5 is a bottomplan in horizontal section of the brakechain spool, showing theeccentricity of the spool with the axis of the internal gear and showingthe attachment of the brake-chain to the larger side or belly of theeccentric spool. Figs. 6, 7, 8, and 9 are diagrammatic viewsillustrating the operation of the brake-chain spool and the manner inwhich the slack of the brake-chain is taken up and the manner in whichthe purchase of the machine is increased in the application of thebrakes.

Referring to the drawings, A represents the platform of a street-car; B,the brake-shaft; B, the brake wheel mounted on the brakeshaft, and b thebrake-wheel handle. Shaft B has mounted thereon the usual brakeratchetwheel I), that is adapted to engage ratchetpawl 17 on theendtimberof the car-platform, as heretofore.

The brake-shaft has bearing in upwardlyprojecting stud C of cap 0 of acasing (J, secured to the cap by means of screws or bolts 0 said casingwith its cap being preferably of cast iron and being rigidly secured tothe end timber of the platform of the car, cap 0 having lateral flangesC perforated for the passage of the securing-bolts.

On the brake-shaft within casing C is operatively mounted a pinion D,that meshes with an internal gear E integral with brakechain spool e,that is somewhat eccentric with gear E, as shown in Fig. 5, and isloosely mounted on a center-pin e',that is rigidly secured to the bottomof easing C. Spool eand internal gear E are inclosed within said casing.It will be observed that the brake-shaft, pinion, internal gear, andbrake-chain spool all move in the same direction.

The brake-chain G is attached, as at g, (see Fig. 5,) to the centralportion of the larger side or belly of the brake-chain spool, and thearrangement of parts is such that when the brake-chain has its fullslack brake-chain spool e is in the position shown in diagram Fig. 6,wherein the greatest radius of the spool is at the point of attachmentof the brakechain. F A half-revolution of the spool brings the same tothe position shown in diagram Fig. L wherein the greatest radius isagain at the point of attach mentof the brake-chain and in whichposition of the spool the slack of the brake-chain is removed or takenup. The chain has not yet been but is ready to be wound upon the spool.It will readily be observed that a still further revolution or turningof the spool (of course in the same direction) to apply the brakes willgradually decrease the radius of the spool at the point at which thebrake-chain winds upon the spool, (see Figs. 8 and 9,) the result beingan increase in the purchase'corresponding to the decrease of the saidradius. Casing C of course has a lateral opening 0 for accommodating thelocation and operation of the brake-chain.

The advantages of my improved brake mechanism alluded to in the preambleof this specification,it is believed, are quite apparent. Furthermore,the mechanism occupies but .little room, and the brake-ohain spool andthe gear and pinion that operatively connect said spool with thebrake-shaft being inclosed, as shown and described, said operating partsare suiflciently protected against dust and dirt.

\Vhat 1 claim is- 1. The combination, with the brake-shaft and a pin onthe lower end of said shaft, of a stationary pinion, brake-chain spoolloose on said pin, brake-chain attached to said spool, and internal gearoperative with said spool and in mesh with the aforesaid pinion, substantially as set forth.

2. The combination, with the brake-shaft, of a stationary pin, aneccentric brake-chain spool loose upon said pin, brake-chain attached tosaid spool, and means operatively connecting said spool and brake-shaftin such a manner as to cause the same to move in the same direction,substantially as set forth.

3. The combination, with the brake-shaft and pinion on the lower end ofsaid shaft, of an internal gear in mesh with said pinion, and a spoolupon which the brake-chain is adapted to wind integral with andeccentric to said internal gear, substantially as set forth.

4:- The combination, with the brake-shaft and a pinion on the lower endof said shaft, of an internal gear in mesh with said pinion, a spooloperative with and eccentric to said internal gear, brake-chain attachedto the larger side or belly of said eccentric spool, the arrangement ofparts being such that in the application of the brakes after the slackin the chain is removed or taken up the radius at the point where thechain winds upon the spool will gradually decrease, substantially as andfor the purpose set forth.

5. The combination, with a casing, brakeshaft having bearing in saidcasing, and a pinion on the lower end of said shaft, of a center-pinsupported by said casing, a brakechain spool loosely mounted on saidpin,brakechain attached to said spool, an internal gear integral withthe upper end of said spool and in mesh with the aforesaid pinion, saidpinion, internal gear, and brake-chain spool being all inclosed withinthe casing that has a lateral opening for accommodating the location andoperation of the brake-chain, substantially as set forth.

6. The combination, with a casing composed of two castings, as at C O,rigidly secured to each other, the one casting constituting the cap ofthe casing, said cap having lateral flanges perforated for the passageof the bolts for securing the casing to the platform of the car andhaving an upwardly-projecting stud or member 0 of the brake-shaft havinghearing in said upwardly-projecting stud, a pinion on the lower end ofsaid shaft, a center-pin supported by said casing, a brake-chain spoolloose on said pin, brake-chain attached to said spool,and internal gearintegral with the upper end of the spool and in mesh with the aforesaidpinion, said pinion, gear, and spool being all inclosed within thecasing and the latter having a lateral opening for accommodatingthelocation and operation of the brakechain, substantially as set forth.

In testimony whereof I sign this specification, in the presence of twowitnesses, this 3d day of August, 1892.

HARRY H. KELLEY.

W'itnesses:

GEo. L. FREDERICKSON, WALTER H. JOHNSON.

